Eastbound freight Number 80 crossing the Gassman Coulee bridge near Minot, North Dakota on February 19, 1981. Four Burlington Northern cabooses on the rear, following a mix of mainly 20 foot international containers on Trailer Train flatcars. Photo by Al Christianson.

Burlington Northern SD45, number unknown; SD40-2 number unknown; SD40-2 number unknown; U33C number unknown; with eastbound freight Number 82 crossing the Gassman Coulee bridge near Minot, North Dakota on February 19, 1981. Photo by Al Christianson.

Milwaukee Road SD40-2 number unknown; Burlington Northern SD40-2 number unknown; Burlington Northern SD40-2 number unknown; Burlington Northern SD40-2 number unknown; with eastbound loaded coal X200 at Valley City, North Dakota on March 14, 1981. Unit train of WISX gondolas, owned by Wisconsin Power and Light. Photo by Al Christianson.

Burlington Northern viaduct at Weston, Washington, circa 1980. Steel viaduct with Boy Scout troop. Photo by J.M. Fredrickson. Other Subject Classes: bridge, people

Burlington Northern viaduct at Weston, Washington, on June 8, 1970. Steel viaduct, man standing on former NP right of way. Photo by J.M. Fredrickson. Other Subject Classes: bridge, people, railroad right of way

Burlington Northern viaduct at Weston, Washington, on June 8, 1970. View of steel viaduct from below, unidentified man. Photo by J.M. Fredrickson. Other Subject Classes: bridge, people

Burlington Northern westbound empty coal train with Burlington Northern hopper cars on the trestle over the Sheyenne River in Valley City, North Dakota on February 20, 1981. Photo by Al Christianson.

Burlington Northern Westbound grain train crossing the Gassman Coulee trestle in Minot, North Dakota on February 19, 1981. Photo by Al Christainson

Burlington Northern Westbound grain train crossing the Gassman Coulee trestle in Minot, North Dakota on February 19, 1981. Photo by Al Christainson

Burlington Northern westbound intermodal train Number 23 crossing the Stone Arch Bridge over the Mississippi River at Saint Anthony Falls in Minniapolis, Minnesota on October 14, 1980. Photo by AL Christianson